Culling is the process of seasonally removing friends from a group based on specific criteria. This is done either to reinforce certain desirable characteristics, such as werewolfism (the term for having fun drunken alter egos), or to remove certain undesirable characteristics, such as snailism (the term for excessively hanging around when no one wants you there). The process of culling usually involves large amounts of salt.

Culling Gale the Snail: "Nobody likes salting the snail, but she leaves you no choice."